mirror of https://github.com/docker/cli.git
830 lines
20 KiB
Go
830 lines
20 KiB
Go
// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// author xeipuuv
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// author-github https://github.com/xeipuuv
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// author-mail xeipuuv@gmail.com
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//
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// repository-name gojsonschema
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// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
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//
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// description Extends Schema and subSchema, implements the validation phase.
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//
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// created 28-02-2013
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package gojsonschema
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import (
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"encoding/json"
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"reflect"
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"regexp"
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"strconv"
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"strings"
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"unicode/utf8"
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)
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func Validate(ls JSONLoader, ld JSONLoader) (*Result, error) {
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var err error
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// load schema
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schema, err := NewSchema(ls)
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if err != nil {
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return nil, err
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}
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// begine validation
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return schema.Validate(ld)
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}
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func (v *Schema) Validate(l JSONLoader) (*Result, error) {
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// load document
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root, err := l.loadJSON()
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if err != nil {
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return nil, err
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}
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// begin validation
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result := &Result{}
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context := newJsonContext(STRING_CONTEXT_ROOT, nil)
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v.rootSchema.validateRecursive(v.rootSchema, root, result, context)
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return result, nil
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}
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func (v *subSchema) subValidateWithContext(document interface{}, context *jsonContext) *Result {
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result := &Result{}
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v.validateRecursive(v, document, result, context)
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return result
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}
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// Walker function to validate the json recursively against the subSchema
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func (v *subSchema) validateRecursive(currentSubSchema *subSchema, currentNode interface{}, result *Result, context *jsonContext) {
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if internalLogEnabled {
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internalLog("validateRecursive %s", context.String())
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internalLog(" %v", currentNode)
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}
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// Handle referenced schemas, returns directly when a $ref is found
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if currentSubSchema.refSchema != nil {
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v.validateRecursive(currentSubSchema.refSchema, currentNode, result, context)
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return
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}
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// Check for null value
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if currentNode == nil {
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if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_NULL) {
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": TYPE_NULL,
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},
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)
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return
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}
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currentSubSchema.validateSchema(currentSubSchema, currentNode, result, context)
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v.validateCommon(currentSubSchema, currentNode, result, context)
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} else { // Not a null value
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if isJsonNumber(currentNode) {
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value := currentNode.(json.Number)
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_, isValidInt64, _ := checkJsonNumber(value)
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validType := currentSubSchema.types.Contains(TYPE_NUMBER) || (isValidInt64 && currentSubSchema.types.Contains(TYPE_INTEGER))
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if currentSubSchema.types.IsTyped() && !validType {
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givenType := TYPE_INTEGER
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if !isValidInt64 {
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givenType = TYPE_NUMBER
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}
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": givenType,
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},
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)
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return
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}
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currentSubSchema.validateSchema(currentSubSchema, value, result, context)
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v.validateNumber(currentSubSchema, value, result, context)
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v.validateCommon(currentSubSchema, value, result, context)
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v.validateString(currentSubSchema, value, result, context)
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} else {
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rValue := reflect.ValueOf(currentNode)
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rKind := rValue.Kind()
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switch rKind {
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// Slice => JSON array
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case reflect.Slice:
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if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_ARRAY) {
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": TYPE_ARRAY,
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},
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)
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return
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}
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castCurrentNode := currentNode.([]interface{})
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currentSubSchema.validateSchema(currentSubSchema, castCurrentNode, result, context)
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v.validateArray(currentSubSchema, castCurrentNode, result, context)
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v.validateCommon(currentSubSchema, castCurrentNode, result, context)
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// Map => JSON object
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case reflect.Map:
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if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_OBJECT) {
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": TYPE_OBJECT,
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},
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)
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return
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}
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castCurrentNode, ok := currentNode.(map[string]interface{})
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if !ok {
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castCurrentNode = convertDocumentNode(currentNode).(map[string]interface{})
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}
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currentSubSchema.validateSchema(currentSubSchema, castCurrentNode, result, context)
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v.validateObject(currentSubSchema, castCurrentNode, result, context)
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v.validateCommon(currentSubSchema, castCurrentNode, result, context)
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for _, pSchema := range currentSubSchema.propertiesChildren {
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nextNode, ok := castCurrentNode[pSchema.property]
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if ok {
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subContext := newJsonContext(pSchema.property, context)
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v.validateRecursive(pSchema, nextNode, result, subContext)
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}
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}
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// Simple JSON values : string, number, boolean
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case reflect.Bool:
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if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_BOOLEAN) {
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": TYPE_BOOLEAN,
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},
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)
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return
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}
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value := currentNode.(bool)
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currentSubSchema.validateSchema(currentSubSchema, value, result, context)
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v.validateNumber(currentSubSchema, value, result, context)
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v.validateCommon(currentSubSchema, value, result, context)
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v.validateString(currentSubSchema, value, result, context)
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case reflect.String:
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if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_STRING) {
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result.addError(
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new(InvalidTypeError),
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context,
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currentNode,
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ErrorDetails{
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"expected": currentSubSchema.types.String(),
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"given": TYPE_STRING,
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},
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)
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return
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}
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value := currentNode.(string)
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currentSubSchema.validateSchema(currentSubSchema, value, result, context)
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v.validateNumber(currentSubSchema, value, result, context)
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v.validateCommon(currentSubSchema, value, result, context)
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v.validateString(currentSubSchema, value, result, context)
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}
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}
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}
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result.incrementScore()
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}
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// Different kinds of validation there, subSchema / common / array / object / string...
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func (v *subSchema) validateSchema(currentSubSchema *subSchema, currentNode interface{}, result *Result, context *jsonContext) {
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if internalLogEnabled {
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internalLog("validateSchema %s", context.String())
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internalLog(" %v", currentNode)
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}
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if len(currentSubSchema.anyOf) > 0 {
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validatedAnyOf := false
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var bestValidationResult *Result
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for _, anyOfSchema := range currentSubSchema.anyOf {
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if !validatedAnyOf {
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validationResult := anyOfSchema.subValidateWithContext(currentNode, context)
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validatedAnyOf = validationResult.Valid()
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if !validatedAnyOf && (bestValidationResult == nil || validationResult.score > bestValidationResult.score) {
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bestValidationResult = validationResult
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}
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}
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}
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if !validatedAnyOf {
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result.addError(new(NumberAnyOfError), context, currentNode, ErrorDetails{})
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if bestValidationResult != nil {
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// add error messages of closest matching subSchema as
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// that's probably the one the user was trying to match
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result.mergeErrors(bestValidationResult)
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}
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}
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}
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if len(currentSubSchema.oneOf) > 0 {
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nbValidated := 0
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var bestValidationResult *Result
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for _, oneOfSchema := range currentSubSchema.oneOf {
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validationResult := oneOfSchema.subValidateWithContext(currentNode, context)
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if validationResult.Valid() {
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nbValidated++
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} else if nbValidated == 0 && (bestValidationResult == nil || validationResult.score > bestValidationResult.score) {
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bestValidationResult = validationResult
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}
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}
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if nbValidated != 1 {
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result.addError(new(NumberOneOfError), context, currentNode, ErrorDetails{})
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if nbValidated == 0 {
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// add error messages of closest matching subSchema as
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// that's probably the one the user was trying to match
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result.mergeErrors(bestValidationResult)
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}
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}
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}
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if len(currentSubSchema.allOf) > 0 {
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nbValidated := 0
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for _, allOfSchema := range currentSubSchema.allOf {
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validationResult := allOfSchema.subValidateWithContext(currentNode, context)
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if validationResult.Valid() {
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nbValidated++
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}
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result.mergeErrors(validationResult)
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}
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if nbValidated != len(currentSubSchema.allOf) {
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result.addError(new(NumberAllOfError), context, currentNode, ErrorDetails{})
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}
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}
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if currentSubSchema.not != nil {
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validationResult := currentSubSchema.not.subValidateWithContext(currentNode, context)
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if validationResult.Valid() {
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result.addError(new(NumberNotError), context, currentNode, ErrorDetails{})
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}
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}
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if currentSubSchema.dependencies != nil && len(currentSubSchema.dependencies) > 0 {
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if isKind(currentNode, reflect.Map) {
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for elementKey := range currentNode.(map[string]interface{}) {
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if dependency, ok := currentSubSchema.dependencies[elementKey]; ok {
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switch dependency := dependency.(type) {
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case []string:
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for _, dependOnKey := range dependency {
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if _, dependencyResolved := currentNode.(map[string]interface{})[dependOnKey]; !dependencyResolved {
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result.addError(
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new(MissingDependencyError),
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context,
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currentNode,
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ErrorDetails{"dependency": dependOnKey},
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)
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}
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}
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case *subSchema:
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dependency.validateRecursive(dependency, currentNode, result, context)
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}
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}
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}
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}
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}
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result.incrementScore()
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}
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func (v *subSchema) validateCommon(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) {
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if internalLogEnabled {
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internalLog("validateCommon %s", context.String())
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internalLog(" %v", value)
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}
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// enum:
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if len(currentSubSchema.enum) > 0 {
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has, err := currentSubSchema.ContainsEnum(value)
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if err != nil {
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result.addError(new(InternalError), context, value, ErrorDetails{"error": err})
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}
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if !has {
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result.addError(
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new(EnumError),
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context,
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value,
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ErrorDetails{
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"allowed": strings.Join(currentSubSchema.enum, ", "),
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},
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)
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}
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}
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result.incrementScore()
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}
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func (v *subSchema) validateArray(currentSubSchema *subSchema, value []interface{}, result *Result, context *jsonContext) {
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if internalLogEnabled {
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internalLog("validateArray %s", context.String())
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internalLog(" %v", value)
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}
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nbItems := len(value)
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// TODO explain
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if currentSubSchema.itemsChildrenIsSingleSchema {
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for i := range value {
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subContext := newJsonContext(strconv.Itoa(i), context)
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validationResult := currentSubSchema.itemsChildren[0].subValidateWithContext(value[i], subContext)
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result.mergeErrors(validationResult)
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}
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} else {
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if currentSubSchema.itemsChildren != nil && len(currentSubSchema.itemsChildren) > 0 {
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nbItems := len(currentSubSchema.itemsChildren)
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nbValues := len(value)
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if nbItems == nbValues {
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for i := 0; i != nbItems; i++ {
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subContext := newJsonContext(strconv.Itoa(i), context)
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validationResult := currentSubSchema.itemsChildren[i].subValidateWithContext(value[i], subContext)
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result.mergeErrors(validationResult)
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}
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} else if nbItems < nbValues {
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switch currentSubSchema.additionalItems.(type) {
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case bool:
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if !currentSubSchema.additionalItems.(bool) {
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result.addError(new(ArrayNoAdditionalItemsError), context, value, ErrorDetails{})
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}
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case *subSchema:
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additionalItemSchema := currentSubSchema.additionalItems.(*subSchema)
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for i := nbItems; i != nbValues; i++ {
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subContext := newJsonContext(strconv.Itoa(i), context)
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validationResult := additionalItemSchema.subValidateWithContext(value[i], subContext)
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result.mergeErrors(validationResult)
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}
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}
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}
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}
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}
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// minItems & maxItems
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if currentSubSchema.minItems != nil {
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if nbItems < int(*currentSubSchema.minItems) {
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result.addError(
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new(ArrayMinItemsError),
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context,
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value,
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ErrorDetails{"min": *currentSubSchema.minItems},
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)
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}
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}
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if currentSubSchema.maxItems != nil {
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if nbItems > int(*currentSubSchema.maxItems) {
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result.addError(
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new(ArrayMaxItemsError),
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context,
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value,
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ErrorDetails{"max": *currentSubSchema.maxItems},
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)
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}
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}
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// uniqueItems:
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if currentSubSchema.uniqueItems {
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var stringifiedItems []string
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for _, v := range value {
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vString, err := marshalToJsonString(v)
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if err != nil {
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result.addError(new(InternalError), context, value, ErrorDetails{"err": err})
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}
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if isStringInSlice(stringifiedItems, *vString) {
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result.addError(
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new(ItemsMustBeUniqueError),
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context,
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value,
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ErrorDetails{"type": TYPE_ARRAY},
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)
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}
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stringifiedItems = append(stringifiedItems, *vString)
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}
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}
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result.incrementScore()
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}
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func (v *subSchema) validateObject(currentSubSchema *subSchema, value map[string]interface{}, result *Result, context *jsonContext) {
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if internalLogEnabled {
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internalLog("validateObject %s", context.String())
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internalLog(" %v", value)
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}
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// minProperties & maxProperties:
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if currentSubSchema.minProperties != nil {
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if len(value) < int(*currentSubSchema.minProperties) {
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result.addError(
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new(ArrayMinPropertiesError),
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context,
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value,
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ErrorDetails{"min": *currentSubSchema.minProperties},
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)
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}
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}
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if currentSubSchema.maxProperties != nil {
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if len(value) > int(*currentSubSchema.maxProperties) {
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result.addError(
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new(ArrayMaxPropertiesError),
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context,
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value,
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ErrorDetails{"max": *currentSubSchema.maxProperties},
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)
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}
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}
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// required:
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for _, requiredProperty := range currentSubSchema.required {
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_, ok := value[requiredProperty]
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if ok {
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result.incrementScore()
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} else {
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result.addError(
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new(RequiredError),
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context,
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value,
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ErrorDetails{"property": requiredProperty},
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)
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}
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}
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// additionalProperty & patternProperty:
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if currentSubSchema.additionalProperties != nil {
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switch currentSubSchema.additionalProperties.(type) {
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case bool:
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if !currentSubSchema.additionalProperties.(bool) {
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for pk := range value {
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found := false
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for _, spValue := range currentSubSchema.propertiesChildren {
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if pk == spValue.property {
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found = true
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}
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}
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pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context)
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if found {
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if pp_has && !pp_match {
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result.addError(
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new(AdditionalPropertyNotAllowedError),
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context,
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value,
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ErrorDetails{"property": pk},
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)
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}
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} else {
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if !pp_has || !pp_match {
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result.addError(
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new(AdditionalPropertyNotAllowedError),
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context,
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value,
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ErrorDetails{"property": pk},
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)
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}
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}
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}
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}
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case *subSchema:
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additionalPropertiesSchema := currentSubSchema.additionalProperties.(*subSchema)
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for pk := range value {
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|
|
found := false
|
|
for _, spValue := range currentSubSchema.propertiesChildren {
|
|
if pk == spValue.property {
|
|
found = true
|
|
}
|
|
}
|
|
|
|
pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context)
|
|
|
|
if found {
|
|
|
|
if pp_has && !pp_match {
|
|
validationResult := additionalPropertiesSchema.subValidateWithContext(value[pk], context)
|
|
result.mergeErrors(validationResult)
|
|
}
|
|
|
|
} else {
|
|
|
|
if !pp_has || !pp_match {
|
|
validationResult := additionalPropertiesSchema.subValidateWithContext(value[pk], context)
|
|
result.mergeErrors(validationResult)
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
} else {
|
|
|
|
for pk := range value {
|
|
|
|
pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context)
|
|
|
|
if pp_has && !pp_match {
|
|
|
|
result.addError(
|
|
new(InvalidPropertyPatternError),
|
|
context,
|
|
value,
|
|
ErrorDetails{
|
|
"property": pk,
|
|
"pattern": currentSubSchema.PatternPropertiesString(),
|
|
},
|
|
)
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
result.incrementScore()
|
|
}
|
|
|
|
func (v *subSchema) validatePatternProperty(currentSubSchema *subSchema, key string, value interface{}, result *Result, context *jsonContext) (has bool, matched bool) {
|
|
|
|
if internalLogEnabled {
|
|
internalLog("validatePatternProperty %s", context.String())
|
|
internalLog(" %s %v", key, value)
|
|
}
|
|
|
|
has = false
|
|
|
|
validatedkey := false
|
|
|
|
for pk, pv := range currentSubSchema.patternProperties {
|
|
if matches, _ := regexp.MatchString(pk, key); matches {
|
|
has = true
|
|
subContext := newJsonContext(key, context)
|
|
validationResult := pv.subValidateWithContext(value, subContext)
|
|
result.mergeErrors(validationResult)
|
|
if validationResult.Valid() {
|
|
validatedkey = true
|
|
}
|
|
}
|
|
}
|
|
|
|
if !validatedkey {
|
|
return has, false
|
|
}
|
|
|
|
result.incrementScore()
|
|
|
|
return has, true
|
|
}
|
|
|
|
func (v *subSchema) validateString(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) {
|
|
|
|
// Ignore JSON numbers
|
|
if isJsonNumber(value) {
|
|
return
|
|
}
|
|
|
|
// Ignore non strings
|
|
if !isKind(value, reflect.String) {
|
|
return
|
|
}
|
|
|
|
if internalLogEnabled {
|
|
internalLog("validateString %s", context.String())
|
|
internalLog(" %v", value)
|
|
}
|
|
|
|
stringValue := value.(string)
|
|
|
|
// minLength & maxLength:
|
|
if currentSubSchema.minLength != nil {
|
|
if utf8.RuneCount([]byte(stringValue)) < int(*currentSubSchema.minLength) {
|
|
result.addError(
|
|
new(StringLengthGTEError),
|
|
context,
|
|
value,
|
|
ErrorDetails{"min": *currentSubSchema.minLength},
|
|
)
|
|
}
|
|
}
|
|
if currentSubSchema.maxLength != nil {
|
|
if utf8.RuneCount([]byte(stringValue)) > int(*currentSubSchema.maxLength) {
|
|
result.addError(
|
|
new(StringLengthLTEError),
|
|
context,
|
|
value,
|
|
ErrorDetails{"max": *currentSubSchema.maxLength},
|
|
)
|
|
}
|
|
}
|
|
|
|
// pattern:
|
|
if currentSubSchema.pattern != nil {
|
|
if !currentSubSchema.pattern.MatchString(stringValue) {
|
|
result.addError(
|
|
new(DoesNotMatchPatternError),
|
|
context,
|
|
value,
|
|
ErrorDetails{"pattern": currentSubSchema.pattern},
|
|
)
|
|
|
|
}
|
|
}
|
|
|
|
// format
|
|
if currentSubSchema.format != "" {
|
|
if !FormatCheckers.IsFormat(currentSubSchema.format, stringValue) {
|
|
result.addError(
|
|
new(DoesNotMatchFormatError),
|
|
context,
|
|
value,
|
|
ErrorDetails{"format": currentSubSchema.format},
|
|
)
|
|
}
|
|
}
|
|
|
|
result.incrementScore()
|
|
}
|
|
|
|
func (v *subSchema) validateNumber(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) {
|
|
|
|
// Ignore non numbers
|
|
if !isJsonNumber(value) {
|
|
return
|
|
}
|
|
|
|
if internalLogEnabled {
|
|
internalLog("validateNumber %s", context.String())
|
|
internalLog(" %v", value)
|
|
}
|
|
|
|
number := value.(json.Number)
|
|
float64Value, _ := number.Float64()
|
|
|
|
// multipleOf:
|
|
if currentSubSchema.multipleOf != nil {
|
|
|
|
if !isFloat64AnInteger(float64Value / *currentSubSchema.multipleOf) {
|
|
result.addError(
|
|
new(MultipleOfError),
|
|
context,
|
|
resultErrorFormatJsonNumber(number),
|
|
ErrorDetails{"multiple": *currentSubSchema.multipleOf},
|
|
)
|
|
}
|
|
}
|
|
|
|
//maximum & exclusiveMaximum:
|
|
if currentSubSchema.maximum != nil {
|
|
if currentSubSchema.exclusiveMaximum {
|
|
if float64Value >= *currentSubSchema.maximum {
|
|
result.addError(
|
|
new(NumberLTError),
|
|
context,
|
|
resultErrorFormatJsonNumber(number),
|
|
ErrorDetails{
|
|
"max": resultErrorFormatNumber(*currentSubSchema.maximum),
|
|
},
|
|
)
|
|
}
|
|
} else {
|
|
if float64Value > *currentSubSchema.maximum {
|
|
result.addError(
|
|
new(NumberLTEError),
|
|
context,
|
|
resultErrorFormatJsonNumber(number),
|
|
ErrorDetails{
|
|
"max": resultErrorFormatNumber(*currentSubSchema.maximum),
|
|
},
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
//minimum & exclusiveMinimum:
|
|
if currentSubSchema.minimum != nil {
|
|
if currentSubSchema.exclusiveMinimum {
|
|
if float64Value <= *currentSubSchema.minimum {
|
|
result.addError(
|
|
new(NumberGTError),
|
|
context,
|
|
resultErrorFormatJsonNumber(number),
|
|
ErrorDetails{
|
|
"min": resultErrorFormatNumber(*currentSubSchema.minimum),
|
|
},
|
|
)
|
|
}
|
|
} else {
|
|
if float64Value < *currentSubSchema.minimum {
|
|
result.addError(
|
|
new(NumberGTEError),
|
|
context,
|
|
resultErrorFormatJsonNumber(number),
|
|
ErrorDetails{
|
|
"min": resultErrorFormatNumber(*currentSubSchema.minimum),
|
|
},
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
result.incrementScore()
|
|
}
|